1. A hairstyle in which long hair is held back so as to hang down
like a pony's tail.

2. A descriptive term for a man having a ponytail hairstyle, or such
character traits as might be associated with having a ponytail, eg:
effeminacy, narcissism, undue concern with fashion etc.

3. A general term used by hackers for 'creatives': advertising
copywriters, graphic designers, video compositors, users characterised by a
preference for the Macintosh, recreational drug use, and better sex lives
than programmers.

4. A derogatory term for web designers and other persons
peripherally associated with IT projects, devoid of programming skills and
dismissed as being concerned with visual presentation to the exclusion of
actual technical reality.